diff --git a/src/testdir/test_shell.vim b/src/testdir/test_shell.vim
index f5a3e98..bdc6631 100644
--- a/src/testdir/test_shell.vim
+++ b/src/testdir/test_shell.vim
@@ -84,7 +84,8 @@
         r !echo hello
         call assert_equal('hello', substitute(getline(2), '\W', '', 'g'), e[0])
       catch
-        call assert_report('Failed to run shell command, shell: ' .. e[0])
+        call assert_report('Failed to run shell command, shell: ' .. e[0]
+              \ .. ', caught ' .. v:exception)
       finally
         bwipe!
       endtry